Circular-knitting machine



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UNITED STATES PATENT OFFICE- ALBERT E. PAGE, OF BROOKLYN, NEW YORK, ASSIGNOR TO SCOTT AND WILLIAMS, INC., 01 NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CIRCULAR-KNITTING MACHINE.

Application. filed October12, 1925. Serial No. 62,089.

My invention relates to pattern control in circular knitting machines and more particularly to the control of yarn changing and severing devices for circular knitting ma chines adapted to make plated work. One object of my invention is to produce a machine which can make a greater variety of patterns, and another, object of myinvention is to produce a machine which at the same time has its pattern control movement ali-curately timed. I have designed a machine which not only retains'all the advantages of the pattern control means of the prior art, but one which can cause a series of timed pattern control movements to take place during any desired revolution of the needle cylinder or other revolving knitting element.

In a circular knitting machine built according to my invention there is the usual main pattern drum preferably revolvin once for each complete article knitted, an an auxiliary pattern drum adapted to be racked once for every revolution of the nee- (lle cylinder unless certain idling means lift the drum pawl clear of the teeth on the ratchet wheel. I provide mechanism includ-.

needle cylinder, means to rack the auxiliary drum and means adapted to cause pattern control movements at such times as the auxiliary pattern drum is. not turning. Both the racking means and the means for said pattern control movementsare actuated by the element revolving in time with the needle cylinder. These pattern control move"- ments can occur at any time during 360 'degrees of revolution of the needle cylinder after the racking of the auxiliarypattern drum. The movements take place only when mg an element revolving in time with the.

are taken out of action within a short space of time after the yarns have been removed from the needles and it is-another purpose of my invention to cause these changes and cutting of yarns accurately and quickly.

For purpose of illustration, my invention is shownand described embodied in a seamless hosiery machine of the Well known Scott & Williams type for making plated fabrics,

although I do not limit the application of my invention to that type. In the drawings Fig. 1 is a side elevation of the yarn cutter and main auxiliary yarn fingers and their control means according to my invention;

Fig. 2 is a detail side elevation of the.

means controlling the main yarn'fingers;

Fig. 3 is a similar view of the yarn cutter and its control means; 7

ig. is a similar view of the auxiliary yarn fingers and part of the means controlling them;

Fig. 5 is an enlarged detail view showing an auxiliary yarn finger feeding to the needles having long jacks;

Fig. 6 is a similar view showing the finger feeding to all the needles having jacks;

Fig. 7 is a lay out showing the relative positions of the cams on the auxiliary drum and Fig. .8' is a side elevation of a modified means for controlling a thrust bar;

7 I shall first describe some of the pattern control means in a machine such asshown adapted to; revolve on a shaft 19 on 'the frameof the machine when racked by apawl 4 23' engaging with the teeth of a rack wheel 21 faston one end-of the drum. One of the teeth on the ratchet wheel is lower than the others for a purpose which will be described .later. This pawl 23 is actuated by means including a main shaft 32 which revolves in .time with the needle cylinder 260, i. e., once for every revolution of the cylinder. The,

end of the pawl away from the teeth on the rack wheel is swivelled to a lever 24, pivoted on the frame of the machine, and the lever 24 and the racking pawl are reciprocated continuously by a cam 537 fast on the main shaft 32. The engagement between the cam and the lever 24 is made by means of a roller 26 on one side of the end of the lever. The roller is held on the surface of the cam by a spring 27 which also serves to hold the pawl in engagement with the ratchet wheel 21. The cam 537 and the teeth on the ratchet wheel 21 are so cut that at each revolution of the main shaft 32 the auxiliary drum 20 is advanced the length of one tooth on the ratchet wheel 21. In this way the auxiliary drum is adapted to be racked once for every revolution of the needle cyhnder.

In order to stop the rotation of the auxiliary attern drum 20 when the machine is knittlng parts of the stocking where striping is not desired or when it is desired to vary or len then the pattern by intermittently stopplng the rotation of the auxlliary drum for a single course or a few courses, idling means are provided which include an idling lever 530 mounted loose on the shaft For the purpose of stopping the auxiliary drum when the machine is knitting parts of the stocking where striping is not desired, this idling lever 530 can be actuated by two cams 501 and 502 on the main pattern drum 120, the foot of the lever overlying the ring. on the drum where these two cams are mounted. Projecting upward from the lever to a point just below the racking pawl 23 is an adjustable arm 531. When the idling lever 530 rides up on to the cam 501 this arm 531 is adapted to lift the racking pawl in such manner that the pawl 23 will not engage any of the teeth on ratchet wheel 21. This lifting takes place as the needle cylinder begins to reciprocate to make the heel of the stocking. At the same time the yarn fingers F vand l? are lifted by similar cams 5O1f and 501? as explained later, and some other yarn finger comes into action. At theend. of. the heel'the racking pawl is lowered to continue moving the ratchet wheel 21 from where it left off, and the striping fingers come into action. The pattern is'thus kept unbroken on the instep of the stocking in spite of the insertion of the heel on the back. At the end of the striped pattern in the foot, the yarn fingers F and F are removed from action by the thrust. "bars 460 and 570 and they and the, racking bar being lifted by means of cams 502 502 and 502 on the main pattern drum. These cams are lower than cam 501 with the result that the racking pawl 23 will continue advancingthe ratchet wheel 21 until it comes to the low tooth over which. it idles until .it

is desired to make striped work again. This ing a toggle such as shown in the co-pend the quadrant is a bracket 535 carrying a shoe cam 536 adapted to lift the idling lever 530 by engagement with a pin 534 projecting from the side of the lever (Fig. 4). In the machine shown in the drawings the quadrant is geared to make onecomplete oscillation or reciprocation for every four revolutions of the needle cylinder and the shoe cam 536 is adapted to raise the idling lever on both its forward and its back strokes at such times as to cause the auxiliary drum to be racked forward on one revolution of the needle cylinder and to stand still on the next. In this way the length of the changes in the pattern on the auxiliary drum 20 is increased. By changing the position and length of the shoe cam 536 or by substitrfi n O application of Robert WV. Scott and mysglf: Serial Number 30,570 filed May 15, 1925, the length of the changes in the pattern on the auxiliary drum 20 and also the relative lengths of the changes can be varied. If it is desired to rack the auxiliary drum 20 every course during striping, the shoe cam can'be removed, and the pawl 23 will rack the ratchet wheel 20 at every revolution of the needle cylinder.

Heretofore thestriping pattern has usually all been laid out on the auxiliary pattern or stripingdrum 20, and I propose to let the striping drum continue to control all the pattern movements; but I have devised means by which a much longer pattern may be obtained with the same size drum and yet the accuracy of the timing of'the pattern control movements be much increased. I propose to avoid use of any space on the striping drum 20 for the control of events which follow within one revolution of the needle cylinder after a racking of the striping drum, by letting means actuated by the main shaft 32 cause those subsequent movements under the control of the striping drum. In the construction shown in Eggs. 1 to 7 and the modification shown in Fig. 8 these means include a disk cam 576 on the main shaft 32 actuating levers whose movements are made effective from a cam 22 on the striping drum 20.

Referring how to the arrangement of yarn fingers and needles for striping patterns, I provide two kinds of yarn fingers as shown in the drawings, one of these being the regular yarn fingers F at the throat plate ltltl 559, which are lifted in and out of action by 'the usual thrust bars 460. -The lower 32 ends of these thrust bars pass down through the lower comb 451 and rest on the main ipattern drum 120 and cams 501", 502 (Fig. 2). These main yarn fingers can also be operated from the stripingdrum by means of cams 22" actuating bell crank levers 17 pivoted on a stud 18 on'the frame of the l machine, and the bell crank levers in turn engaging in notches in the thrust bars 460 in well known fashion.

\ The other kind of yarn fingers are auxiliary fingers identified in the drawings by 15.. the letter F; These auxiliary yarn fingers are pivoted on a cross pin 554 on the latch ring 550 with the main yarn fingers F, but they are positioned to feed am to the circle of needles N at a point a out 120 de recs ahead of the throat plate 559. The atch 'ring is pivoted at 552, as usual, to the bracket 401 mounted on the bedplate D. I For the purpose of lifting the auxiliary yarn fingers entirely out of action when knitting por- "tionsof the stockingwhere striping is not desired, a special thrust bar 570 is provided, actuated by cams 501 and 502, which raise the fingers by means of a stud 572 underlying the fingers and a short link 573 pivoted to the stud and the cross pin 554 (Fig. 4).

During striping these auxiliary yarn fingers F are operated by the auxiliary drumthrough connecting links 568, and auxiliary thrust bars 5.69. These thrust bars 569 are 5 each adjustably and rigidly secured to a,

separate bell crank lever 17 pivoted on the stud 18, by screws 571, engaging in a slot in the lower end of the thrust bar. The lever 17 is operated by cams 22 on-the striping drum. The striping drum cams for one auxiliary finger are shown in Fig. 1. The bell crank levers for the auxiliary yarn fingers do not engage any of the regular thrust bars 460.

In order that the yarn changes made by the main and auxillary yarn fingers may occur at a proximate] the same wale of the fabric hbing knit, t e movements of the auxiliary yarn fingers are timed to occur slightly before those of the main yarn fingers, by giving the cams 22"? and 22 slightly different positions on the striping drum 20 with reference to the direction of movement of the striping drum, the cams 22*0 erating the auxiliary yarn fin ers occupy a slightly advanced position with relation to the main yarn finger cams 22, adapted to act on the same revolution ofthe 7). It should be noted, however, that this slight difference in position still permits both the auxiliary and maimyarn finger cams I to actuate their respective yarn fingers on the same racking movement of the-striping drum in that they are within the are covered by one racking, S ince the ,racking of the needle cylinder (Figstriping drum by cam 537 on the main shaft always occurs at the same time with regard to the revolution of the needle cylinder, it follows that, by adjustin these striping and main shaft cams as escribed, the yarn feed changes can be caused at predetermined times in such manner as to occur at the same point in the knitted stocking.

At the point on the needle circle where the auxiliary yarns are fed, the needles are raised to various levels, in order that striping can be obtained by varying the feeding level of the auxiliary yarns and allowing these yarns to float behind the needles to which they are not fed.

While patterns can be made with fewer yarn fingers, I have shown a machine using two auxiliary yarn fingers, and two main yarn fingers to produce vertical and horizontal stripes and dots with four colors in the resulting fabric. To produce such a pattern by these means the needles can be separated into a plurality of levels at the auxiliary feeding point by means of jacks 380. The cams 22 operating the auxiliary yarn fingers must be of difierent heighths. In the machine shown in the drawings the needles on which the vertical stripes are to be knit are jackless; those where the dots are to occur have medium length jacks; and the remainder have long jacks (Fig. 5). When it is desired to feed the plating yarn to all the needles having jacks, no cam is usedon the striping drum to operate the auxiliary yarn finger, but a stop'575 is provided on the latch ring 550 fixing the exact point of this feeding level. When the plating yarn is to feed onl .to the long jack needles a low cam is use When the plating yarnis not to be fed to any of the needles for a short space of time there is ahigh cam on the stri ing drum to lift the finger out of action.

or cutting off such yarns as are removed from the knitting a usual clamp 606 and cutter 608 are provided inside the needle llO circle'toward the front of the machine. 'Itwill be noted that outgoing yarns must be carried around the circle for a considerable distance from the auxiliar feeding point or the throat plate before theglast needle on which the yarn was knit comes closest to the cutter 608. My invention provides for cutti g the outgoing yarns when the yarn has heen thus brought around through an angle which, in the case of an auxiliary yarn,

place after the striping drum has finished its is 280 degrees. This cutting not only takes rack, but may be made to occur at any or all.

revolutions ofthe needle cylinder. In the construction shown in Figs. 1 to 7 this is accomplished by the following means adapted to actuate the usual thrust bar 460 and lever 611 controlling the cutter. There is a bell crank lever 17 similar to those opcrating the main yarn fingers adapted to I crooked cam arm 579 pivoted on the frame of the machine and adapted to bear'against the disk cam 576 on main shaft 32. There is a spring 580 tending to hold the lever 579 against thedisk cam 576, and these parts are so arranged that the spring also tends to hold the notch of the latch against the comb 451. When the bell crank lever for the cutter is not raised by one of its cams 22 .the latch rests against one side of the lower thrust bar guide 451 and the cam arm 579 is held away from the surface of the disk cam 576. When the bell crank lever lifts the cutter, the latch is raised and the spring 580 pulls the cain arm 579 against the cam; Acting through the adjustable link 578, the bell crank lever then co-operates with the other elements inputting the .notch of the latch on the lower guide 451. As the disk cam 576 revolves it co-operates with the link, 578 in kicking the latch off the guide 451, the thrust bar drops and thecutter shears. \Vhile the disk cam 576- is set to trip the cutter about 220 degrees after the main yarn finger change, it is obvious that the disk cam can be set to operate at any time within one revolution after the cutter cam on the striping drum latches up the cutter.

The operation of the construction shown in Figs. 1 to 7 may be described as follows: Assuming that the machine is about to commence the plating design the thrust bars 460 and 570 for the main and auxiliary plating yarn fingers drop off the cams 502 and 502* on the main pattern drum and the thrust bars 460 and 569 comeunder the influence of the cams 22 and 22 on the. striping drum. These cams hold one auxiliary and onemai'n finger out of action,

and let the other main finger drop into feeding position. The other auxiliary finger has no cam under its bell crank lever and is therefore lowered till it feeds to all the needles having jacks, but is held above the jackless or vertical stripe needles by the stop 575. The auxiliary yarn is thus floated behind the jackless needles as the needles with jacks are drawn down, and floated vertical stripes are made. lrVith the arrangement of cams shown in Fig. 1 four courses are now knit with these vertical stripes only. As the back of the stocking comes to the auxiliary feeding point on the fourth round, the active auxiliary finger is raised by a low cam and the yarn is fed only to the long jack needles, missing the needles where the dots are to appear as well as the vertical stripe needles. As the back of the stocking comes opposite the throat plate the cams for the main fingers are reversed and the other yarn begins to feed. The relative setting of these main and auxiliary cams can be seen in Fig. 2. Two courses are now knit with the yarn fingers in this position when the auxiliary yarn begins to feed again to the dot needles and the main yarns are reversed. After thus knitting four-courses with only the vertical stripe the bell crank lever for the inactive auxiliary finger rides off its high cam down onto the surface of the auxiliary drum, thus putting the finger into position to feed to all the needles having jacks. The previously active auxiliary finger is raised out of action by a high cam. The horizontal -stripe thus produced is made for two courses. At every racking on the striping drum where there are cams towithdraw some yarn from knitting, there is a cam to start the operation of the cutter. It is obvious that the cutter can be used to cut either an auxiliary or main yarn, or both at once. By these simple means I save all the space on the striping drum for the yarn changes, and out the yarns at any desired time 'within one revolution after their" removal. There is greater cam space for the yarn changes, and also absolute accuracy in the timing of the cutter in that the cam disk 576 revolves in time with the needle cylinder.

'By a slight modification, the cam disk 576 can be made to lift the thrust bar as well as trip it (see Fig. 8). To accomplish this the bell crank lever 17 may be done away with and a dog 581 pivoted on a bar 582. This dog 581 is held in an upright position on the side of the thrust bar away from the striping drum by a spring 583. A spring finger 584 mounted in the do lies in the path of the cam 22 on the striping drum. The end of the bar 582 away from the dog is pivoted on the frame of the machine and lies on the disk cam 576. As the spring finger 584 is pushed down by the cam 22 on the striping drum, the dog 581 comes under a notch m the thrust bar and at this moment the disk cam lifts the bar 582 thus raising the thrust bar. When the disk cam lowers the bar the dog is pulled out of the notch by the spring 583 and.

repeat this change in the next or any other striping drum 20 is not operating for any reason whatsoever, the mechanisms operatedby the cams on shaft 32, being subject to movment of the striping drum 20, are nonafi'ective. I It is obvious that my invention can be used for many other purposes'besides stripmg, and can be used to actuate any pattern control elements, by which I mean any looping elements, knitting cams, or yarn yarn fingers or. cutters.

What I claim is: 1. A circular knitting machine having a revolving needle cylinder and an intermittently revolving pattern means adapted to cause pattern control movements,in combination with mean including an element revolving in time with the needle cylinder adapted to be effective for only the first revolution of the needle cylinder after a attern control movement has been caused by said pattern means, said means being adapted to cause a' pattern control movement at any desired point within 'that revolution.

2. A circular knitting machine having a revolving needle cylinder, means including' an element revolving in time with the needle cylinder, a thrust rod and an intermittently revolving patterndrum adapted to cause said thrust rod to be raised, said means bein adapted to trip said thrust rod at any desired point Within one revolution of the needle cylinder after said pattern drum has caused said rod to be raised.

3. A circular knittin machine having a revolving needle 0 lin er, a main pattern drum and an auxi iary pattern drum controlled by the main drum, a pluralit of thrust rods and cams on said auxi iary drum'adapted to actuate said thrust rods,

in combination with an element revolving in time with the needle cylinder and means actuated by said element efiective for only one revolution oi the needle cylinder after a thrust rod is raised, adapted to hold said rod up and to release same at an desired point within said revolution of t e needle" cylinder.

4. A circular knitting machine having a revolving needle cylinder, and intermittently revo ving main and auxiliary pattern drums, the auxiliary drum bein controlled b the main drum, in combination with an elzzment revolving in time with the needle cylinder, rackin means for said auxiliary drum actuated E said element, and other means actuated y said element but contg'olled from said auxiliary drum adapted to cause pattern control movements during the orti'on of any desired revolution'of the nee le cylinder when the auxiliary drum 1s not being racked, and idling means ada t- I ed to cause said racking means to idle or one or more revolutions of the needle cylinder.

.5. A circular knitting machine having a revolving needle cylinder, intermittently revolving main and auxiliary pattern drums, the auxiliary drum being controlled by the main drum, and an element revolving in time with the needle cylinder, in combination with pattern control elements at a plurality of points around the needle cylinder, one of said elements being actuated by the auxiliary drum, racking means for said auxiliary drum actuated by said revolving elementand meansactuated by said revolving element butcontrolled from said auxiliary drum adapted to actuate another of said pattern control elements at such a time that the actuationof the two pattern control elements occur at the same needle. wale.

. 6. A circular k itting machine having a revolving needle" ylinder, yarn control elements at a lurality of points around the needle cylin er, an intermittently revolving pattern drum actuating one of said yarn control elements in combination with an element revolving in time with the needle cylinder and means actuated by said revolvin element but controlled from said drum a apted to actuate another of said yarn control elements during only a single revolution of the needle cylinder and when the drum is not revolving.

7 A circular knitting machine having a revolving needle cylinder, yarn control elements at a lurality of points around the (iiar, an intermittentlfy revolvlng pattern drum actuatin one 0 said yarn control elements in com ination with an element revolving in time withvthe needle cylinder and means actuated by said revolving element but controlled from said drum adapted to actuate another of said yarn control elements during only a single revolution of the needle cylinder and at such a time that the actuations of the two elements occur at the same needle wale.

8. A circular knittin machine having a revolving needle cyliner, a plurality of yarn fingers, a yarn cutter, anda pattern '-revolving needle cylin er, a plurality of yarn fingers, a yarn cutter, and a pattern drum and cams thereon adapted to move said yarn fingers ve rtically and open said cutter, in combination with an element rcvolving in time with the needle cylinder,

and means operated by said element adapted to rack said pattern drum every revolution thereof and other means operated by said element adapted to trip said yarn cutter subsequently in the same revolution when the cutter is opened by a pattern drum cam.

10. A circular knitting machine having a revolving needle cylinder, a yarn cutter, a pattern drum and a cam thereon, a bell crank lever and a thrust bar actuated by said cam adapted to lift said yarn cutter to open position, and a latch for said cutter connected to said bell crank lever in combination with an element revolving in time with the needle cylinder, racking means for said pattern drum actuated by said revolving element, and a cam on said revolving element adapted to co-operate with said bell crank lever, latch and thrust rod to hold said cutter in open position, and to trip said cutter within one revolution of the needle cylinder.

11. A circular knitting machine having a revolving needle cylinder, an intermittently revolving pattern drum, a plurality of yarn fingers adapted to feed yarns to the needle circle at two points and a yarn cutter, in

' combination with an element revolving in time with the needle cylinder adapted to rack said pattern drum, cams on said pattern drum adapted to operate the yarn fingcrs at two feeding points in a delayed sequence, and means operated by said revolving element, but controlled from said drum, adapted to trip the yarn cutter subsequently to the two yarn changes but in the same revolution therewith.

12. A circular knitting machine having a revolving needle cylinder, an intermittently revolving pattern drum, and an element revolving in time with the needle cylinder, in combination with a pawl actuated by said revolving element adapted to rack said drum, yarn fingers adapted to feed yarns at a plurality of points on the needle cylinder and cams on said drum adapted to actuate said yarn fingers at intervals which bring their yarn changes at the same point on the knitted fabric.

13. A circular knitting machine having a revolving needle cylinder, main yarn fingers adapted to feed yarns at one point on the needle cylinder, auxiliary yarn fingers adapted to feed yarn at another point on the needle cylinder, and a pattern drum and earns thereon for said yarn fingers, the cams for the main yarn fingers being slightly retracted with relation to the cams for the auxiliaryyarn fingers, in combination with an element revolving in time with the needle cylinder, and means actuated by said revolving element-adapted in one movement to rack said pattern drum-through an arc containing both auxiliary and main yarn finger cams.

14. A circular knitting machine having a revolving needle cylinder, main and auxiliary yarn fingers adapted to feed yarns at separate points on the needle circle and a cutter adapted to act at still another point on the needle circle, in combination with a pattern drum and cams thereon adapted to move said main and auxiliary yarn fingers into and out of action at intervals which bring their yarn changes at the same point -on the needle circle, in combination with a pattern drum and cams thereon adapted to move said main and auxiliary yarn fingers into and out of action at intervals which bring their yarn changes at the same point on the knitted fabric, other cams thereon to open said cutter, an element revolving in time with the needle cylinder; and cam means actuated by said revolving element adapted to rack said pattern drum through an arc containing main and auxiliary yarn finger cams and other means actuated by said element but controlled from the cutter cam on said drum adapted subsequently to trip said cutterall during any desired revolution of the needle cylinder.

16. A circular knitting machine having a revolving needle cylinder, intermittently re-,

be operated from said main pattern drum,

cams on said auxiliary pattern drum adapted to vertically alter the active positions of said yarn fingers and other cams thereon to open said cutter, in combination with an element revolving in time with the needle cylinder, and means actuated by said revolvlng element adapted to rack said pattern drum and other means actuated by said element but controlled from the cutter cam on said auxiliary drum adapted to co-operate in holding said cutter open and subsequently to trip sameall during any desired revolution of the needle cylinder.

17. A circular knitting machine having a revolving needle cylinder, intermittently revolving main and auxiliary pattern drums,

. a plurality of yarn fingers adapted to be thrown into and out of action by said main pattern drum and a'yarn cutter adapted to be operated from said main pattern drum rack said pattern drum and other means actuated .by said element but controlled from the cutter cam on the auxiliary drum adapted to co-operate in holding said cutter open and subsequently to trip same-all durlng any desired revolutioniof the needle cylinder.

18. A circular knitting machine having a revolving needle cylinder, intermittently revolving main and auxiliary pattern drums, main and auxiliary yarn fingers adapted to be thrown into and out of action by said maln drum, and a yarn cutter adapted to be operated from said main drum, in combination with cams on said auxiliary drum to throw said main yarn fingers into and out of action, and other cams theredn slightly advanced with respect to said main finger cams to change the levels of said auxiliary fingers at intervals which bring the main and auxiliary finger g am changes at the same point on'the knitte fabric, other cams on said auxiliary drum to open said cutter, an element revolving in time with the needle cylinder; and cam means actuated by said revolving element adapted to rack said pattern drum through an arc containing main and auxiliary yarn finger cams, other-means actuated by said element but controlled from the cutter cam on said auxiliary drum adapted to co-operate in holding said cutter open and subsequently to trip-sameall during any desired revolution of the needle cylinder.

19. A circular knitting machine having a revolving needle cylinder, a yarn cutter, an intermittently operated main pattern drum adapted to set and trip said cutter, in com' bination with an intermittently operated auxiliary pattern drum adapted to open said yarncutter and, an element revolving in time with the needle cylinder and cam means actuated thereby but controlled by said auxiliary drum adapted to trip said cutter and idlin means for said auxiliary drum actuated by said main pattern drum, substantially as described.

20. A circular knitting machine having a revolving needle cylinder, a yarn cutter, an

intermittently operated main pattern drum adapted to set and trip said cutter, and an intermittently operated auxiliary pattern drum adapted to open said cutter, in combination with yarn fin ers operated by said main and auxiliary rums, mechanism including an element revolving in time with the needle cylinder adapted to rack said pattern drum and to trip said cutter when opened by said auxiliary drum, idling means for said auxiliary drum actuated by said main drum and an oscillating member adapted to actuate said idling means for one or more revolutions of the needle cylinder.

In testimony whereof I have signed my name to this specification.

" ALBERT E. PAGE. 

